Ingredients
Equipment
Method
Prep and preheat
- Preheat the oven to 350F, then grease and line a 9x5-inch loaf pan.
Make the cinnamon apple filling
- Mix brown sugar and ground cinnamon, then toss the apples in 2 tablespoons of the mixture until coated and fragrant.
Mix the batter
- Beat the butter and granulated sugar until fluffy, then beat in the eggs and vanilla extract until smooth.
- Whisk the all-purpose flour, baking powder, and salt together, then add to the batter alternately with the milk until just combined.
Layer and swirl
- Spread half the batter in the loaf pan, then top with half the apples and half of the remaining cinnamon sugar mixture.
- Repeat with the remaining batter, apples, and cinnamon sugar to build the second layer, keeping the top fairly even.
- Swirl gently with a knife, making 2-3 light passes to create cinnamon streaks without fully mixing the layers.
Bake and glaze
- Bake for 50-55 minutes at 350F, until a toothpick comes out clean and the center springs back slightly.
- Cool for 15 minutes, then whisk powdered sugar with 2-3 tablespoons milk until thick and pourable with a smooth ribbon.
- Drizzle the vanilla glaze over the loaf so it settles into the swirls and runs slightly down the sides.
Notes
For clean, defined cinnamon swirls, toss the apples with the reserved cinnamon-brown sugar and swirl the knife lightly—over-swirl can muddy the layers. Store covered at room temperature for up to 2 days or in the refrigerator for up to 5 days; rewarm slices briefly in the microwave. Freezing is yes: wrap tightly and freeze up to 2 months. For a lower-sugar option, replace half the granulated sugar with a sugar-free baking blend while keeping the brown sugar/cinnamon topping portion the same for flavor.
